S-8209B Seiko Instruments, S-8209B Datasheet - Page 2

• Manufacturer Part Number: S-8209B
• Description: Battery Protection IC
• Manufacturer: Seiko Instruments

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2
BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION
S-8209B Series
CTLD
CTLC
Block Diagram
CB
DO
CO
Remark The diodes in the IC are parasitic diodes.
400 nA
400 nA
Seiko Instruments Inc.
Figure 1
Delay circuit
Overdischarge
detection
comparator
Cell-balance
detection
comparator
Overcharge
detection
comparator
+
−
+
−
+
−
8.31 MΩ
Rev.2.2
_00
CDT
VDD
VSS